SharePoint List Progress Bar Top Border

How do I get rid of the top border in a progress bar? I have attached an image and here is my code ...

{

  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",

  "elmType": "div",

  "children": [

    {

      "elmType": "span",

      "txtContent": "@currentField",

      "style": {

        "padding-left": "8px",

        "white-space": "nowrap"

      }

    }

  ],

  "attributes": {

    "class": "sp-field-dataBars"

  },

  "style": {

    "padding": "0",

    "font-size": "12pt",

    "font-weight": "bold",

    "color": "#000000",

    "background-color": "#12ae00",

    "width": "=if(@currentField >= 101, '50%', (@currentField * 1) + '%')"

  }

}

Thanks,

John